Margaretha Geertruida MacLeod (neé Zelle) MacLeod's stage name was Mata Hari, which she adopted (following her married life in the Dutch East Indies) as an exotic dancer in Paris in the first years of the 20th century and later used in spying for France during the First World War. She was executed by French authorities in 1917 under suspicion of having also spied for Germany.
Who, the highest paid of any performer in music hall in the early 20th century and knighted in 1919, wrote "I Love A Lassie", "Stop Yer Ticklin' Jock" and "Roamin' in the Gloamin'"?
Which early 20th century artist gained a reputation for the beauty and novelty of his staging of operas, plays and ballets, especially in Paris, London, Berlin and New York?